The novel explains some of the unexplained events in Jurassic Park III. "Ben Hildebrand"'s death, for example, is revealed to have been caused by internal injury during the parasailing accident, and not by animal attack.

It is revealed that Eric gets the "Raptor" claw (the one he shows to Alan Grant in the film) during a fight with a Velociraptor.

Survivor features several dinosaurs that were shown in the films, including T. rex, Triceratops, Velociraptor, Pteranodon and Ankylosaurus, but also introduces new ones such as Diplodocus and Iguanodon (the latter are prominently featured and Eric even "befriends" one of them).

The Spinosaurus isn't featured in Survivor, though in JP3, Eric says he has seen it. Maybe he saw it after the events on the book.